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A platform for research: civil engineering, architecture and urbanism
High alumina cement-phenol resin composite: Water resistivity and effect of post hydration of unreacted cement on durability
Phenol resin-high alumina cement composite, a high flexural strength cement based material is investigated here in view of its durability. It showed satisfactory durability performance for one year in water at 20 deg C and outdoor exposure. High durability is the specific property of high alumina cement-phenol resin composite but not of other cement/phenol resin composites or other fillers/phenol resin combinations. The strength loss after immersion in water at 20 deg C for one year is only 9 %, and the elastic modulus remains almost unchanged. Linear expansion and weight increase of high alumina cement-phenol resin composite are 0.12 % and 0.82 %, respectively, under the same immersion condition. However, this composite contains a large amount of unhydrated cement because basic hardening takes place with a very small quantity of water which is released from the phenol resin during the polycondensation reaction to form a crosslinking structure. The present paper discusses the influence of unhydrated cement particles on durability based on the results of several immersion tests and some other experiments and suggests a method ('immunization') to improve the stability of the material.
High alumina cement-phenol resin composite: Water resistivity and effect of post hydration of unreacted cement on durability
Phenol resin-high alumina cement composite, a high flexural strength cement based material is investigated here in view of its durability. It showed satisfactory durability performance for one year in water at 20 deg C and outdoor exposure. High durability is the specific property of high alumina cement-phenol resin composite but not of other cement/phenol resin composites or other fillers/phenol resin combinations. The strength loss after immersion in water at 20 deg C for one year is only 9 %, and the elastic modulus remains almost unchanged. Linear expansion and weight increase of high alumina cement-phenol resin composite are 0.12 % and 0.82 %, respectively, under the same immersion condition. However, this composite contains a large amount of unhydrated cement because basic hardening takes place with a very small quantity of water which is released from the phenol resin during the polycondensation reaction to form a crosslinking structure. The present paper discusses the influence of unhydrated cement particles on durability based on the results of several immersion tests and some other experiments and suggests a method ('immunization') to improve the stability of the material.
High alumina cement-phenol resin composite: Water resistivity and effect of post hydration of unreacted cement on durability
Verbundwerkstoffe aus Hochtonerdezement und Phenolharz: Beständigkeit gegen Wasserangriff und Einfluß einer Nachhydratisierung von unreagiertem Zement auf die Beständigkeit
Pushpalal, G.K.D. (author) / Kobayashi, T. (author) / Hasegawa, M. (author)
Cement and Concrete Research ; 27 ; 1393-1405
1997
13 Seiten, 11 Bilder, 2 Tabellen, 13 Quellen
Article (Journal)
English
Phenol , organische Verbindung , Tonerdeschmelzbeton , Tonerdebeton , Verbundwerkstoff , Witterungsbeständigkeit , Elastizität , mechanische Festigkeit , Hydratisieren , Wasserabbinden von Zement , Porengrößenverteilung , Calciumaluminathydrat , Dehnung , hydraulischer Zement , Phenolharz , Tonerdezement
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